Contents | 5
APPENDIX A Wiring Diagrams
APPENDIX B H
2
S and SO
2
Calculations
Concentration Measurement ............................................................................. B-1
Absorbance Calculation .............................................................................. B-1
Excess H
2
S, Excess SO
2
, Ratio (H
2
S/SO
2
) and Total (H
2
S + SO
2
) ...... B-2
Air Demand .......................................................................................... B-2
APPENDIX C Analyzer Timing
Timing States / Periods ...................................................................................... C-1
Period 1 – Special Flush ............................................................................. C-1
Period 2 – Flush and Zero........................................................................... C-1
Period 3 – Sample Flush ............................................................................. C-2
Period 4 – Measure ..................................................................................... C-2
Zero and Photo-Span Calibration ......................................................... C-2
Operation Sequences ........................................................................... C-3
Period 5 – Flush and Zero........................................................................... C-3
Period 6 – Track Zero.................................................................................. C-3
Period 7– Photo-Span Calibration............................................................... C-3
Period 8 – Track Photo-Span Calibration .................................................... C-4
Steam Blowback ................................................................................... C-4
Period 9 – Pre-Steam Flush ........................................................................ C-4
Period 10 – Steam Blowback ...................................................................... C-4
Period 11 – Post Steam Flush ..................................................................... C-4
Special Periods .................................................................................................. C-5
Period 12 – Continuous Flush ..................................................................... C-5
Period 13– Continuous Hold ....................................................................... C-5
Period 14 – Continuous Sample ................................................................. C-5
APPENDIX D Parameter IDs / Modbus Addresses
APPENDIX E Alarm Codes
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